Compressive creep of polycrystalline ZrSiO4

Goretta, K. C.; Cruse, T. A.; Koritala, R. E.; Routbort, J.L.; Mélendez-Martı́nez, J.J.; Arellano‐López, A.R. de

doi:10.1016/s0955-2219(00)00316-2

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…Creep rupture phenomena have long been investigated through direct experiments [ Liu and Ross , 1996; Guarino et al , 2002; Lockner , 1998], and described on the basis of different models [ Miguel et al , 2002, Ciliberto et al , 2001; Kun et al , 2003; Hidalgo et al , 2002; Main , 2000; Politi et al , 2002; Pradhan and Chakrabarti , 2003; Turcotte et al , 2003; Shcherbakov and Turcotte , 2003; Vujosevic and Krajcinovic , 1997; Saichev and Sornette , 2005]. Many investigations focused on homogeneous materials such as metals [ Ishikawa et al , 2002] and ceramics [ Goretta et al , 2001; Morita and Hiraga , 2002] and numerous recent studies are concerned with heterogeneous materials such as composites and rocks [ Liu and Ross , 1996; Guarino et al , 2002; Lockner , 1998]. Viscoelastic creep and creep rupture behaviors are among the critical properties needed to assess long‐term survival of material structures.…”

Section: Geometry and Physical Inputs Of The Modelmentioning

confidence: 99%

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Gravity‐driven instabilities: Interplay between state‐ and velocity‐dependent frictional sliding and stress corrosion damage cracking

2010

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[1] We model the progressive maturation of a heterogeneous mass toward a gravitydriven instability, characterized by the competition between frictional sliding and tension cracking, using an array of slider blocks on an inclined basal surface, which interact via elastic-brittle springs. A realistic state-and rate-dependent friction law describes the block-surface interaction. The inner material damage occurs via stress corrosion. Three regimes, controlling the mass instability and its precursory behavior, are classified as a function of the ratio T c /T f of two characteristic timescales associated with internal damage/ creep and with frictional sliding. For T c /T f ) 1, the whole mass undergoes a series of internal stick and slip events, associated with an initial slow average downward motion of the whole mass, and progressively accelerates until a global coherent runaway is observed. For T c /T f ( 1, creep/damage occurs sufficiently fast compared with nucleation of sliding, causing bonds to break, and the bottom part of the mass undergoes a fragmentation process with the creation of a heterogeneous population of sliding blocks. For the intermediate regime T c /T f ∼ 1, a macroscopic crack nucleates and propagates along the location of the largest curvature associated with the change of slope from the stable frictional state in the upper part to the unstable frictional sliding state in the lower part. The other important parameter is the Young modulus Y which controls the correlation length of displacements in the system. Citation: Faillettaz, J., D. Sornette, and M. Funk (2010), Gravity-driven instabilities: Interplay between state-and velocitydependent frictional sliding and stress corrosion damage cracking,

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Section: Geometry and Physical Inputs Of The Modelmentioning

confidence: 99%

“…Turcotte et al, 2003;Shcherbakov and Turcotte, 2003;Vujosevic and Krajcinovic, 1997;Saichev and Sornette, 2005]. Many investigations focused on homogeneous materials such as metals[Ishikawa et al, 2002] and ceramics[Goretta et al, 2001; …”

mentioning

confidence: 99%

Gravity‐driven instabilities: Interplay between state‐ and velocity‐dependent frictional sliding and stress corrosion damage cracking

2010

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“…In the past decades, there have been many studies of the creep rupture phenomena through direct experiments (Liu and Ross, 1996;Guarino et al, 2002;Lockner, 1998) as well as through different models (Miguel et al, 2002;Ciliberto et al, 2001;Kun et al, 2003;Hidalgo et al, 2002;Main, 2000;Politi et al, 2002;Pradhan and Chakrabarti, 2004;Turcotte et al, 2003;Shcherbakov and Turcotte, 2003;Vujosevic and Krajcinovic, 1997;Saichev and Sornette, 2005). If a lot of works were devoted to homogeneous materials like metals (Ishikawa et al, 2002) and ceramics (Goretta et al, 2001;Morita and Hiraga, 2002) many recent studies are concerned with heterogeneous materials like composites and rocks (Liu and Ross, 1996;Guarino et al, 2002;Lockner, 1998). Understanding failure properties of composite materials is important because of the increasing number of applications in engineering structures, such as aerospace, biomedical and civil engineering infrastructure.…”

Section: Introductionmentioning

confidence: 99%

“…Since past decades, people have studied the creep rupture phenomena through direct experiments ( Saichev and Sornette, 2003). If a lot of works were devoted to homogeneous materials like metals (Ishikawa et al, 2002) and ceramics (Goretta et al, 2001;Morita and Hiraga, 2002) many recent studies concerns heterogeneous materials like composites and rocks (Liu and Ross, 1996;Guarino et al, 2002;Lockner, 1998). The knowledge of the failure properties of composite materials are of great importance because of the increasing number of applications for composites in engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Andrade and critical time-to-failure laws in fiber-matrix composites: Experiments and model

Nechad

Helmstetter

Guerjouma

et al. 2005

Journal of the Mechanics and Physics of Solids

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We present creep experiments on fiber composite materials. Recorded strain rates and acoustic emission (AE) rates exhibit both a power-law relaxation in the primary creep regime and a power-law acceleration before global failure. In particular, we observe time-to-failure power-laws in the tertiary regime for acoustic emissions over four decades in time. We also discover correlations between some characteristics of the primary creep (exponent of the power-law and duration) and the time to failure of the samples. This result indicates that the tertiary regime is dependent on the relaxation and damage processes that occur in the primary regime and suggests a method for predicting the time to failure based on the early time recording of the strain rate or AE rate. We consider a simple model of representative elements, interacting via democratic load sharing, with a large heterogeneity of strengths. Each element ARTICLE IN PRESS www.elsevier.com/locate/jmps 0022-5096/$ -see front matter r consists of a non-linear dashpot in parallel with a spring. This model recovers the experimental observations of the strain rate as a function of time. r

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“…[22][23][24] The low diffusion and creep rates of ZrSiO 4 suggest it should resist densification and pore coarsening. [25][26][27][28][29] Except for HF, it is chemically resistant to acids. 30 These properties make ZrSiO 4 an attractive candidate for a porous fiber-matrix interface.…”

Section: Introductionmentioning

confidence: 99%

Zirconia–Silica–Carbon Coatings on Ceramic Fibers

Boakye

Hay

Petry

et al. 2004

Journal of the American Ceramic Society

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Precursors for zircon–carbon mixtures were made to coat fibers for ceramic‐matrix composites. Precursors were characterized using XRD, TGA, and DTA. Zircon formed from vanadium‐ or lithium‐doped precursors after heat treatments at ≥900°C in air, but it did not form at 1200°–1400°C in argon when large amounts of carbon were added. Some precursors were used to coat Nextel™ 720 and Hi‐Nicalon™ fibers. The coatings were characterized using SEM and TEM, and coated‐fiber tensile strengths were measured. Although zircon formed in powders, only tetragonal‐zirconia–silica mixed phases formed in fiber coatings at 1200°C in air. Loss of vanadium oxide flux to the fibers may have caused the lack of conversion to zircon. The strengths of the coated fibers were severely degraded after heat treatment at ≥1000°C in air, but not in argon. The coated fibers were compared with zirconia–carbon‐coated fibers made using similar methods. Mechanisms for fiber strength degradation are discussed.

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Compressive creep of polycrystalline ZrSiO4

Cited by 6 publications

References 33 publications

Gravity‐driven instabilities: Interplay between state‐ and velocity‐dependent frictional sliding and stress corrosion damage cracking

Gravity‐driven instabilities: Interplay between state‐ and velocity‐dependent frictional sliding and stress corrosion damage cracking

Andrade and critical time-to-failure laws in fiber-matrix composites: Experiments and model

Zirconia–Silica–Carbon Coatings on Ceramic Fibers

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